Acid hydrolysis of fibers from dairy manure

Microwave Enhanced Advanced Oxidation Process Application to Treatment of Dairy Manure

“…The yield of glucose decreased with an increase of reaction time (Liao et al, 2006). Their results pointed out that the reaction period was also critical for the sugar yield.…”

“…The other reason was that temperatures and acid concentration applied were much lower than that of optimal conditions. As indicated in conventional acid hydrolysis of lignocellulosic materials in dairy manure for the production of simple sugars, samples required pretreatment with 75% acid concentration and 30 min of reaction time for the de-crystallization of fibre, and then were further hydrolyzed in 12.5% of acid at 135 °C for 10 minutes (Liao, et al, 2006). For the MW/H 2 O 2 -AOP treatment of dairy manure, a higher reducing sugar production was obtained at above 120 °C (Kenge, et al, 2010).…”

Combined sodium hydroxide and ammonium hydroxide pretreatment of post-biogas digestion dairy manure fiber for cost effective cellulosic bioethanol production

“…The predominant component, nitrogenous material, comes from indigestible forage proteins and ammonia and other nitrogen compounds in urine and manure. This nitrogen could be a potential nutrient source for microbial growth in ethanol fermentation [17,35]; however, biomass extractives interfere with analytical measurements [56,57] and thus were not considered in our study.…”

“…Both of these feedstocks are natural composites consisting of three main biopolymers; cellulose, hemicellulose, and lignin [10][11][12][13][14][15]. Several studies [16][17][18][19][20] have demonstrated the potential of manure fibers (either pre-or post-biogas digestion) as a lignocellulose feedstock for the production of biofuels and value-added chemicals. The composition of manure fibers depends on the animal feed and the conditions of anaerobic digestion if carried out.…”

Two-Stage Dilute Acid Hydrolysis of Dairy Manure for Nutrient Release, Solids Reduction and Reducing Sugar Production

“…This indicated that hemicelluloses were solubilized, and degraded into pentose under dilute acid concentration, and the residue solids were mainly cellulosics [5]. Liao, et al also stated that the conversion rate of cellulose and hemicellulose to sugar from dairy manure was very low under dilute acid and low temperatures [14]. For the MW/H 2 O 2 -AOP, acid concentration, heating time and temperature, as well as interaction among all three factors, affected reducing sugar yield from dairy manure.…”